Stuart M. Kaminsky (September 29, 1934 – October 9, 2009) was an American mystery writer and film professor. He is known for three long-running series of mystery novels featuring the protagonists Toby Peters, a private detective in 1940s Hollywood; Inspector Porfiry Petrovich Rostnikov, a Moscow police inspector; and veteran Chicago police officer Abe Lieberman. A later series followed Lew Fonesca, a process server from Sarasota, Florida.

Kaminsky's Inspector Rostnikov novel A Cold Red Sunrise received the 1989 Edgar Award for Best Novel. He earned six other Edgar nominations, most recently for the 2005 non-fiction book Behind the Mystery: Top Mystery Writers Interviewed, which was also nominated for an Anthony Award, a Macavity Award, and an Agatha Award. In 2006 Kaminsky received the Grand Master Award from the Mystery Writers of America.

Kaminsky, who grew up in Chicago, earned a B.S. in journalism and an M.A. in English from the University of Illinois and a Ph.D. in speech from Northwestern University. He taught film studies at Northwestern for 16 years, and then taught at Florida State for six years.

Kaminsky's first novel was the 1977 Toby Peters mystery Bullet for a Star. He went on to write more than 50 novels, as well as story collections and nonfiction works. Kaminsky was a past president of the Mystery Writers of America.

Besides being one of America's most prolific mystery writers, Kaminsky inspired many other writers in the genre, including fellow Chicagoan Sara Paretsky, who dedicated the first novel in her V. I. Warshawski private-eye series to Kaminsky.

Kaminsky and his wife, Enid Perll, moved to St. Louis, Missouri in March 2009 to await a liver transplant to treat the hepatitis he contracted as an army medic in the late 1950s in France. He suffered a stroke two days after their arrival in St. Louis, which made him ineligible for a transplant. He died on October 9, 2009.